ASN Wikibase Occurrence # 243625
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| Date: | Sunday 4 October 2020 |
| Time: | 12:30 LT |
| Type: |  Piper PA-28-160 Cherokee |
| Owner/operator: | Private |
| Registration: | N6179U |
| MSN: | 28-115 |
| Year of manufacture: | 1964 |
| Total airframe hrs: | 2792 hours |
| Engine model: | Lycoming O-320-B2B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Volney near Oswego County Airport (FZY/KFZY), Fulton, NY -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Fulton, NY |
| Fulton, NY | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Shortly after takeoff, the engine crankshaft expansion plug dislodged, and oil started to cover the airplane's windscreen. The pilot attempted to return to, and land on the departure runway; however, the airplane subsequently touched down more than halfway down the runway. The pilot was unable to stop the airplane and it went off the runway and struck a chain link fence, which resulted in substantial damage to the fuselage, vertical stabilizer, and both wings.
The crankshaft expansion plug was installed during maintenance that was performed 3 days prior to the accident. The mechanic who performed the maintenance stated that he installed the crankshaft plug using a ball peen hammer; instead of following the procedures outlined by the engine manufacturer; which called for the use of a special tool to properly deform and seat the plug. The mechanic said that he has used a ball peen hammer in the past to install crankshaft plugs with success; however, in this instance, the plug did not seat properly, dislodged, and allowed oil to exit the end of the crankshaft in flight.
Probable Cause: The mechanic's improper maintenance, which resulted in the crankshaft expansion plug dislodging in flight and a subsequent forced landing.
Accident investigation:
 |
|
Sources:
NTSB ERA21LA006
https://flightaware.com/live/flight/N6179U/history/20201004/1625Z/KFZY/KFZY
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Oct-2020 22:32 | Geno | Added |
| 04-Oct-2020 22:44 | Geno | Updated [Location, Phase, Nature, Source, Damage, Narrative] |
| 04-Oct-2020 23:08 | RobertMB | Updated [Aircraft type, Registration, Cn, Operator, Departure airport, Source, Narrative] |
| 07-Jul-2022 18:25 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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